generalized_tables:
  # etldoc: imposm3 -> osm_waterway_linestring_gen3
  waterway_linestring_gen3:
    source: waterway_linestring_gen2
    sql_filter: waterway IN ('river')
    tolerance: ZRES9
  # etldoc: imposm3 -> osm_waterway_linestring_gen2
  waterway_linestring_gen2:
    source: waterway_linestring_gen1
    sql_filter: waterway IN ('river')
    tolerance: ZRES10
  # etldoc: imposm3 -> osm_waterway_linestring_gen1
  waterway_linestring_gen1:
    source: waterway_linestring
    sql_filter: waterway IN ('river')
    tolerance: ZRES11
tables:
  # etldoc: imposm3 -> osm_waterway_linestring
  waterway_linestring:
    type: linestring
    fields:
    - name: osm_id
      type: id
    - name: geometry
      type: geometry
    - name: waterway
      key: waterway
      type: string
    - key: name
      name: name
      type: string
    - name: name_en
      key: name:en
      type: string
    - name: name_de
      key: name:de
      type: string
    - name: tags
      type: hstore_tags
    mapping:
      waterway:
      - stream
      - river
      - canal
      - drain
      - ditch